Device for guiding piles in pile-drivers.



F. R. OHRISTIANI. DEVICE FOR GUIDING FILES m PILE DRIVERS. APPLICATIONFILED DBO. 4, 1912. 1,1 1 5 ,78 2 Patented Nov. 3, 1914,

3 SHEETS-SHEET 1.

w I ww/m THE NORRIS PETERS 60., PHOTO-LITHO, WASHINGTON, D. C.

F. R. GHRISTIANI.

DEVICE FOR GUIDING PILES IN PILB DRIVERS.

APPLIGATION FILED DEC. 4. 1912.

1,1 1 5,782. Patented Nov. 3,1914.

3 SHBBTS-BHBET 2.

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F. R. CHRISTIANI.

DEVICE FOR GUIDING FILES IN PILE DRIVERS. APPLICATION FILED DBO. 4.1912.

3 SHEBTST'BHEET 3.

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THE NORRIS PETERS C0,. PHOTO-LITHQ, WASHING I'ON. D. C. v

FRITZ RUDOLF CHRISTIANI, 0F HAMBURG, GERMANY.

DEVICE roe GUIDING FILES 11v FILE-DRIVERS.

T 0 all whom'it may concern:

Be it known that I, FRITZ Rumour Crims- TIANI, a subject of Denmark, andresident of Hamburg, Germany, have invented a new and useful Device forGuiding Piles in Pile- Drivers, of which the following is aspecification.

In driving piles for sheet piling especially of concrete it is verydi'llicult to make sure that the piles are driven in such an eXactmanner that the tongues and grooves fully engage or that the grooves ofadjacent piles coincide exactly to allow cement to be filled in lateron. In using piles of wood, it has been tried to overcome thisdifiiculty by making use of two guiding beams, which stand apart forthethickness of the piles to be driven down. This pair of beams wassuspended, to hanging pillars which were connected to the frame of thepile driver by rotatable bolts. The upright position was merely held bythe weight. Evidently by means of this device it was not possible toobtain an exact guiding.

According to the present invention also two guiding beams are used,which however are arranged on the pile driver or on its under-carriageor truck movably toward the wall or planking and which are pressedagainst the pile to a certain degree, so as to serve as clamping jawsand to firmly hold the pile to be driven, so that this pile is wellguided when driven down. a I Figure 1 shows the underpart of a piledriver, in elevation, having the device forming the subject matter' ofthis invention attached to it. Fig. 2 is a similar view of amodification. Figs. 8 and 4 are detailed views of the connection betweenscrew spindles 7a in the frame. Fig. 5 is a front view of the deviceshown in Fig. 1.

In the construction shown in Fig. 1 the carriage b of the pile driver arests on a special truck 0, which is made to run on rails laid parallelto the sheet piling to be produced. The new device is attached to thebeams cl of this truck. If however there is no truck of course thedevice may be attached to the frame of the pile driver, con structedaccordingly or to the pile driver itself.

In the construction shown the device consists of four levers or plates6, which are arranged in pairs and are pivoted symmetrically to rails f.These rails f are attached to the beams d in such way, that they canSpecification of Letters Patent.

Application filed December 4, 1912. Serial No. 734,847.

Patented Nov. 3, 1914.

be loosened and shifted along the beams to any described extent. Nhenadjusted to the desired positlon they can be tightened again; The righthand levers are connected to one another by a beam h and the left handlevers are also connected to one another by a beam h thereby forming apair of op positely disposed jaws. These planks are supported orsteadied by strong iron beams, which also may be bolted. or attached tothe levers e. The levers e are formed in the construction shown by twostrong well braced triangular plates, between which on their outerpoints a nut 2' is pivoted by lat eral studs.

Each nuti embraces a screw spindle 7a which on its lower end, isprovided with a handle or a handwheel 7c and onits upper end with a headon, which is pivotally attached to the rails f by means of lateral studsn.

The operation of the apparatus is the following: Before the work properbegins, the pile driver is brought in the proper position, the rails fare so adjusted that their centers lie in the central plane of the sheetpiling to be erected whereupon by rotating the spindles la the beams hare moved away from each other to the necessary extent should this nothave been done before. Then the pile 0 is brought in the position readyto be driven down, whereupon by turning the spindles is in the properdirection the beams h are made to approach to the pile 0 until they holdthe pile between them. Then the pile can be driven down by the piledriver the beams h giving it a perfect guidance and preventing anytwisting of the same. Thus the strain of forces produced by any tendencyto twist or to oppose the correct centering are not transmitted to thepile driver or to the frame or structure carrying the same but to theplanks already driven down. When the pivoted to brackets 7 attached tothe frame a The n er arms e of these levers are rotatably connected withscrewspindles Z0 which can be adjusted by the aid of cranks Z0 Theoperation is the same as described with reference to Fig. 1. The onlydifference is, that the device can not be shifted as a whole.

I claim:

1. In combination with pile drivers a device for guiding the piles insheet piling, comprising two sets of levers pivoted to a fixed part inconnection with the pile driver, a beam attached to each of said sets oflevers and means to oscillate the levers to press the beams againstpiles held between them, which beams thus effectually guide a new pilein proper position, when the latter is being driven down by the piledriver.

2. In combination with pile drivers a device for guiding the piles insheet piling, comprising two movable jaws consisting each of a beamattached to a set of levers pivoted to a fixed part in connection withthe pile driver, and a screw gear adapted to move each set of levers ina plane at right angles to the sheet piling.

3. In combination with pile drivers a device for guiding the piles insheet piling, comprising rails adjustably attached to a beam formingpart of a truck on which the pile driver is arranged, and jaws pivotallyfastened to the said rails.

4. In combination with pile drivers a device for guiding the piles insheet piling, comprising two sets of levers, a beam carried by each set,a screw spindle and a nut rotatably attached to each set of levers, the

screw spindle being rotatably attached to a, fixed part in connectionwiththe pile driver.

FRITZ RUDOLF CHRISTIANI.

Witnesses:

MAX F. A. KAEMPFF, ERNEST H. L. MUMMENHOFF.

7 Copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

Washington, D. 0.

